56 engine issues - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 01-13-2013, 02:01 PM
Registered User
 
Join Date: Jan 2013
Posts: 19
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
56 engine issues

This may be long and somewhat confusing so bare with me. I have a stock 56 Belair 265 cu.in V-8 two barrel carb powerglide. The problem is upon acceleration it falls flat on its face like it is out of fuel. This is what I have done thus far.
New carb (actually have tried three carbs) no change in condition
new points, plugs, condenser no change
new coil and resistor no change
totally by passed gas tank and fuel pump with secondary systen no change
cleaned and freeded up the exhaust manifold heat riser no change
tried two new distributors no change
reset carb float level no chage
timing is slightly advanced played with it no change
Car starts right up idels smooth and takes acceleration fine with no load runs fairly well once you get over 20MPH completely cuts out from a dead stop or if you try to take off quick it simply stalls and dies. I have NO idea of what to do moving forward any ideas?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 01-13-2013, 02:36 PM
hcompton's Avatar
Old & Furious
 
Join Date: Oct 2012
Location: MD
Age: 42
Posts: 1,074
Wiki Edits: 0

Thanks: 6
Thanked 90 Times in 87 Posts
Quote:
Originally Posted by Tarboy56 View Post
This may be long and somewhat confusing so bare with me. I have a stock 56 Belair 265 cu.in V-8 two barrel carb powerglide. The problem is upon acceleration it falls flat on its face like it is out of fuel. This is what I have done thus far.
New carb (actually have tried three carbs) no change in condition
new points, plugs, condenser no change
new coil and resistor no change
totally by passed gas tank and fuel pump with secondary systen no change
cleaned and freeded up the exhaust manifold heat riser no change
tried two new distributors no change
reset carb float level no chage
timing is slightly advanced played with it no change
Car starts right up idels smooth and takes acceleration fine with no load runs fairly well once you get over 20MPH completely cuts out from a dead stop or if you try to take off quick it simply stalls and dies. I have NO idea of what to do moving forward any ideas?
Do you have a volt meter hooked up. Does the voltage drop when the problem happens. How about the battery is it strong. Maybe low on water and dropping out. Engine ground hooked up? Coil burned up shorting to ground under a load. Also have you changed out the wires and checked the power wires to the coil and points.

I take it you tried good fresh gas? Any small fuel lines that might be blocked. Maybe something close to the carb that keeps getting switched over.

Sounds like you tried just about everything. Could it be knocking and falling down.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 01-13-2013, 03:51 PM
Registered User
 
Join Date: Jan 2013
Posts: 19
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
hcomptom,
new battery wireing all new new coil we did check dwel and voltage all were fine it acts exactly like a fulty accelator pump but I have tried many new and other carbs no luck. In the chevy manual they discuss the heat riser i assume it it supposed to be closed when engine is cold to direct heat to the intake & carb then after warmed up it opens to allow exhauust to flow out the exhaust hav you ever had issues with this?
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 01-13-2013, 03:58 PM
vinniekq2's Avatar
Registered User
 
Join Date: Jun 2012
Location: BC,Canada
Age: 56
Posts: 8,663
Wiki Edits: 0

Thanks: 365
Thanked 862 Times in 824 Posts
hcompton
exactly what he says,check voltage and generator out put.Is there a resister on the points?try driving slowly and putting the lights on
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 01-13-2013, 05:30 PM
Registered User
 
Join Date: Jan 2013
Posts: 19
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
The generator is also brand new and voltage reuglator when installes and polorized voltage was right on. I will do some voltage checks and check the ground also. Any other thoughts ? Would you know of anyone who is an expert on these engines I could call?
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 01-13-2013, 05:44 PM
vinniekq2's Avatar
Registered User
 
Join Date: Jun 2012
Location: BC,Canada
Age: 56
Posts: 8,663
Wiki Edits: 0

Thanks: 365
Thanked 862 Times in 824 Posts
The most knowledgeable 56 chevy,265 guy I know of is Richard Johnson,Richmond BC.No idea how to contact him.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 01-13-2013, 06:05 PM
Registered User
 
Join Date: Nov 2012
Location: Atlantilc iowa
Posts: 438
Wiki Edits: 0

Thanks: 0
Thanked 26 Times in 26 Posts
I maybe wrong, but check for a vacuum leak, Father in law had the problem many many years ago on 55 chevy. Just drove him crazy. was going to sell the car and a old guy sprayed the base of the carb with staring fluid and it stubbled. Gasket on bottum of carb was leaking. Give that a try.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 01-13-2013, 07:25 PM
Registered User
 
Join Date: May 2012
Location: Foresthill Ca.
Posts: 35
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
You said you tried different carbs,,,, But did you check to see if the accerletor pump is pumping???
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 01-14-2013, 09:54 AM
Registered User
 
Join Date: Jan 2013
Posts: 19
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Engine issues

I did spray some wd-40 around the base of the carb. as well as the intake I didn't see any visible signs of a leak the accelerator pump squirts two strong squirts of fuel when I hit the throttle when not under a load. I even put a carb. off a running car on and it made NO difference. I'm pretty good at this stuff and my BRO is a professional engine builder this has us both stumped !!!!
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 01-14-2013, 10:05 AM
Registered User
 
Join Date: Nov 2012
Location: Atlantilc iowa
Posts: 438
Wiki Edits: 0

Thanks: 0
Thanked 26 Times in 26 Posts
When you ever get it solved let the rest of us know what you found, i'm always interested in knowing what stumps me.
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 01-14-2013, 10:26 AM
Registered User
 
Join Date: Jan 2013
Posts: 19
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
56 engine issues

Will do IF I ever get it figured out
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 01-14-2013, 12:13 PM
Registered User
 
Last photo:
Join Date: Apr 2012
Posts: 22
Wiki Edits: 0

Thanks: 0
Thanked 4 Times in 4 Posts
Check if the vacum and mechanical advance work freely and if the ground strap is good and flexible to the distributor plate.
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 01-14-2013, 03:22 PM
Registered User
 
Join Date: Jan 2013
Posts: 19
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
56 chev engine issues

I will give this a good close look
Reply With Quote Quick reply to this message
  #14 (permalink)  
Old 01-14-2013, 04:11 PM
Registered User
 
Last photo:
Join Date: Jan 2011
Location: Hopewell, Va
Age: 62
Posts: 1,233
Wiki Edits: 0

Thanks: 0
Thanked 123 Times in 119 Posts
56 engine issues

How old is the exhaust system. Could the exhaust pipe or muffler colapsed from the inside? I seen this before. Runs fine until you try to getup to speed.
Reply With Quote Quick reply to this message
  #15 (permalink)  
Old 01-14-2013, 04:26 PM
Registered User
 
Join Date: Jan 2013
Posts: 19
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
56 engine issues

Good question everything is pretty new very few miles on the car since it was restored.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
engine issues southernculture Engine 13 01-21-2012 08:55 PM
Engine cooling issues fittyfod Engine 17 02-21-2011 12:50 PM
serious engine issues junkytundra Engine 6 06-17-2010 04:22 AM
Engine issues... Ozz1967 Engine 1 12-30-2005 01:19 PM
engine has issues. 79 camaro 454 Engine 5 05-21-2004 06:42 PM


All times are GMT -6. The time now is 11:49 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.